exam Maths Puzzle Numerical Ability

I need to know how to measure a triangle using linear pairs, and also measuring triangles using vertical angles.

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exam Other Question

An airplane travels from points A and B with a distance of 1500 km and a wind along its flight line. If it takes the airplane 2 hours from A to B with the tailwind and 2.5 from B to A with the headwind, what is the velocity? Could you explain domain and range